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Service bulletins for the 2020 Acura RDX

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

234 on file from NHTSA, as of 2026-10-19.

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By trouble code

Only bulletins with component: Equipment and accessories are shown. Show all

Bulletins, newest first
BPaS073020212021-08-03. Service bulletin. EQUIPMENT. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2021 RDXs with a client complaint of a rattle noise coming from the Head-Up Display (HUD). To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BPOC051020212021-05-25. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Dealer Message - On February 18, 2021, American Honda announced a warranty extension for certain 2019-2020 RDX vehicles. This warranty extension covers communication issues in the MOST bus network where the vehicle may experience popping or crackling from the speakers, a blank display, no sound from the audio system, a Network Loss message, center display staying on after turning the vehicle to the OFF mode with the door open, display switches between the Day Mode and Night Mode, the "Drive mode not available" message appears, or the disclaimer message is stuck on.
BPaS032520219022021-04-06. Service bulletin. EQUIPMENT; VISIBILITY. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2020 RDXs with a client complaint of a noise coming from the front windows when opening or closing. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind.
BBOM021820212021-02-26. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Dealer Message - Today, February 18, 2021, Acura is announcing a warranty extension for certain 2019-20 RDX vehicles. This warranty extension covers communication issues in the MOST bus network where the vehicle may experience popping or crackling from the speakers, a blank display, no sound from the audio system, a Network Loss message, center display staying on after turning the vehicle to the OFF mode with the door open, display switches between the Day Mode and Night Mode, the "Drive mode not available" message appears, or the disclaimer message is stuck on. Acura is extending the warranty for the MOST bus network connectors on these vehicles to 6 years or 72,000 miles from the original date of purchase, whichever comes first.
B21-0092021-02-26. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Service Bulletin - A loose connection in the MOST bus network is causing a popping or crackling from the speakers, a blank display, or no sound from the audio system. You may also see a Network Loss message, Center Display Unit Stays On with Ignition Turned to OFF and Door Open, display switches between the Day Mode and Night Mode, the Drive mode not available message appears, or Disclaimer is stuck on.
B20-0312021-02-26. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Service Bulletin - There is a popping or crackling from the speakers, a blank display, or no sound from the audio system. You may also see a Network Loss message, the center display staying on after turning the vehicle to the OFF mode with the door open, display switches between the Day Mode and Night Mode, the Drive mode not available message appears, or the disclaimer message stuck on.
B20-0312021-02-18. Service bulletin. EQUIPMENT. Service Bulletin - There is a popping or crackling from the speakers, a blank display, or no sound from the audio system. You may also see a Network Loss message, the center display staying on after turning the vehicle to the OFF mode with the door open, display switches between the Day Mode and Night Mode, the Drive mode not available message appears, or the disclaimer message stuck on.
BPaS010620219022021-01-14. Service bulletin. VISIBILITY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2020 RDXs with a client complaint of a noise coming from the front windows when opening or closing. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind.
B20-0532021-01-05. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Service Bulletin - The MIL is flashing with loss of power. Humid air within the intake tract may condense and accumulate excessive moisture during steady driving.
BPaS101620209022020-10-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2020 RDXs with a client complaint of a noise coming from the front dampers while driving. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
B20-0462020-10-14. Service bulletin. EQUIPMENT. Service Bulletin - The Head Up Display (HUD) image appears blurry, faded, discolored, or distorted.
B20-0312020-10-14. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Service Bulletin - There is a popping or crackling from the speakers, a blank display, or no sound from the audio system. You may also see a Network Loss message.
BPaS092820209042020-10-03. Service bulletin. EQUIPMENT; VISIBILITY. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2020 RDXs with a client complaint of a noise coming from the front windows when opening or closing. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind.
BPaS092820209022020-10-03. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; SUSPENSION. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2020 RDXs with a client complaint of a noise coming from the front dampers while driving. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
B20-0312020-10-03. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. Service Bulletin - There is a popping or crackling from the speakers, a blank display, or no sound from the audio system. You may also see a Network Loss message.
BPaS081220202020-08-19. Service bulletin. SUSPENSION; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2020 RDXs with a client complaint of a noise coming from the front dampers while driving. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
BTS2002012020-03-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Tech Line Summary Article - There was a provisional procedure provided to all field engineers to attempt the repair of certain clients' vehicles that might have experienced issues related to the MOST connectors, resulting in the audio system shutting down and the speakers making popping noises.
B20-0042020-01-23. Service bulletin. EQUIPMENT; SEATS. Service Bulletin - When the front passenger seat is occupied, and the vehicle is turning, a tick or click is heard. There is too much clearance in the front passenger lower seat frame around the area of the seat weight sensor bracket.
B19-0502019-10-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL. Service Bulletin - The Display Audio screen may show the clock off by 1 hour. This is caused by a software issue that stores the incorrect date in the audio unit.
BBOM082820192019-09-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL; EQUIPMENT. Dealer Message - Today, August 28, 2019, Acura is announcing a product update for certain 2019-2020 RDX vehicles where the display audio system may not show the correct time. Do an iN VIN status inquiry to determine which units in your inventory are affected.
BBTS1909012019-09-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Tech Line Summary Article - Are your client's complaining that their stored navigation favorites have been lost and they can't add them again after the recent OTA update? This issue can be easily fixed with a factory data reset of the infotainment unit.
B19-0142019-08-14. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Service Bulletin - A whistling is heard from the center dash area when the engine is running with the A/C system cycling, or a few seconds after the ignition is turned to OFF.
B19070C2019-07-26. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. ServiceNews Article - There's a video going around on YouTube and online forums that claims to fix an issue where the audio unit stays on with the ignition turned to OFF. This fix has you run a Hardware Auto Detect from the diagnostic screen. There's just one problem with this fix: if you run it with the audio unit in this failed state, it causes a No Audio Connection or Radio Unavailable message and a loss of sound! If you get any vehicles in for this issue, find out if your client tried this fix. If they did, advise them to not run it again.
B19-0142019-07-23. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Service Bulletin - A whistling is heard from the center dash area when the engine is running with the A/C system cycling, or a few seconds after the ignition is turned to OFF.
B19040C2019-06-06. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM; EQUIPMENT. ServiceNews Article - Are you hearing a popping or crackling from the speakers? This may be due to a connection issue in the MOST bus network, which can be identified by the unique red and green connectors at each component of the infotainment system.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.